Ask Questions
Question everything. Ask children questions about anything and have them answer it. Make it simple enough where they can understand them but challenging enough where they have to think about it. Asking them questions will help them comprehend things that are going on around them
Read Aloud at Circle Time
During read alouds, ask the students questions to help them understand what they are listening to. Ask them what they think will happen or why they think something happened. It will keep them engaged and they will be able to comprehend the story.